on the market. sacramento, california, followed by stockton, california, san jose, and denver colorado. a lot of the california, first three, those were all really hard-hit places. people are snapping up houses. not a surprise given the economic recovery in the golden state. >> if you want to see lists, go to cnnmoney.com. at a dry cleaner, we replaced people with a machine. what? customers didn't like it. so why do banks do it? hello? hello?! if your bank doesn't let you talk to a real person 24/7, you need an ally. hello? ally bank. your money needs an ally. license and registration please. what's this? uhh, it's my geico insurance id card, sir. it's digital, uh, pretty cool right? maybe. you know why i pulled you over today? because i'm a pig driving a convertible? tail light's out.. fix it. digital insurance id cards. just a click away with the geico mobile app. >>> nick d'aloisio just sold his smartphone app to yahoo! he's still in high school. zain asher is joining us new york. built an app that makes it easier to study. he might not have to study again. >> reporter: a lucky, lucky guy.